Highlight active HTML anchor - 在线编辑器

          <!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <style>
     :target {
      border: 2px solid #D4D4D4;
      background-color: #e5eecc;
    }
  </style>
</head>
<body>

  <h1>This is a heading</h1>

  <p><a href="#news1">Jump to New content 1</a></p>
  <p><a href="#news2">Jump to New content 2</a></p>

  <p>Click on the links above and the :target selector highlight the current active HTML anchor.</p>

  <p id="news1"><b>New content 1...</b></p>
  <p id="news2"><b>New content 2...</b></p>

  <p><b>注意:</b> IE 8 以及更早版本的浏览器不支持 :target 选择器.</p>

</body>
</html>
        